Old Pawn Native American Navajo Pearl necklace w Shadow Box Turquoise Pendant

Vintage old Pawn Silver and Turquoise Most likely vintage 1970s Signed piece 22”-23” length necklace; measures 11.5” from top of pendant to clasp 2.5” long pendant This was a gift to me because I like turquoise. Full disclosure, the previous owner attempted to clean the shadow oxidized pendant in the inside box, this oxidization can be restored by a silversmith. I can provide more pictures if requested